UBV colors of Virgo cluster irregular galaxies

Details UBV colors of Virgo cluster irregular galaxies UBV colors of Virgo cluster irregular galaxies

Sep 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986aj.....92..557g&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 92, Sept. 1986, p. 557-566.

Mathematics

Logic

47

Electrophotometry, Irregular Galaxies, Ubv Spectra, Virgo Galactic Cluster, Astronomical Spectroscopy, Color, Dwarf Galaxies, Position (Location), Spatial Distribution

Scientific paper

Photoelectric UBV aperture photometry is presented for 65 dwarf irregular and morphologically related types of galaxies that are probable Virgo cluster members. Virgo cluster Irr galaxies cover a wider range in color than typical samples of field Irr systems, primarily due to the presence of unusually red Im galaxies in Virgo. The extremely blue "blue compact dwarf" and the red amorphous galaxies in Virgo also stand out on a UBV color-color plot, but the majority of Virgo Irrs are undistinguished in terms of UBV colors. Statistical correlations are found between colors and location within the cluster. Red Irrs often are in elliptical galaxy rich, dense areas of the cluster, while the blue Irrs roughly follow the spiral distribution pattern. Thus a connection exists between environment and the properties of Irrs. Simple statistical tests for ongoing stripping as the source of red Irrs, however, yields null results.

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